Oscillating steam-engine



l.) '2Sheets-S heet 1. J. G. MILLER.

Oscillating Steam Engine.

No. 241,503. Patented May 17,1881.

llllllllllll l lllllll Ill INVENTOR. a W

-W'ITN ES S ES. %M a ig w. aw,

iu. PETERS. Pholo-Lifhognphen Washinglan. D. c

(No Model.)

t. I w 8 M 8 w e 1 e h V S a 2 M 6 M g n n 9 R M p m a 6 t M S .g n .J a1 AU S 0 O 5 M 2 N INVENTOR.

- WITN E53 N. PETERS, PholoUthogr-lphfir. washinglon D. C.

UNITED STATES PATENT OFFICE.

JOHN G. MILLER, OF LOUISVILLE, KENTUCKY.

OSCILLATING STEAM-ENGINE.

SPECIFICATION forming part of Letters Patent No. 241,503, dated May 17,1881.

Application filed August 26, 1880. (No model.)

To all whom it may concern:

Be it known that I, JOHN CURRY MILLER, of the city of Louisville, in thecounty of J efferson and State of Kentucky, have invented a new anduseful Improvement in Oscillating Steam-Engines, the same beingspecially designed for use in. connection with my improve ment patentedheretofore on June 1, 1880, nu mbered 228,374; but it is also applicableto and intended for oscillating, horizontal, and vertical engines ingeneral. 7

To enable others skilled in the art to which my invention pertains tomake and use the same, the following is a full, clear, and exactdescription of its construction and operation, reference being had tothe annexed drawings and the letters of reference marked thereon, allwhich form part of this specification.

The nature and object of my improvement are to obtain the maximum ofutility to the minimum of steam used; or, in other Words, to'increasethe power with a reduced consumption of steam, by connecting each end ofthe pistonrod with a crank and shaft carrying momentum-wheels settin gat proper angles with each other, the same being connected with andtransmittin g the force of their momentum, combined with thesteam-power, to a driving-shaft setting at a proper angle to them.

Figure is a front elevation, showing the piston and cranks at the centerof the stroke. The letterA refers to the cylinder, constructed accordingto the principles of my improvement patented as above mentioned. Theletters Q refer to the valve-connecting rods; the letters P to thehollow trunnions operating as steam inlet and escape pipes. The lettersK refer to the bed-plate, and the letters L to the upright frame,forming journal-bearings for the parts. The letters G refer to themomentumwheels attached to the crank-shafts marked 0 and B, the sameconnecting with the driving-shaftfni arked D by means offorce-transmitting pitmen marked 1,connecting from the uppermomentum-wheels at N to the crankwheels marked J attached'to the crankor driving-shaft marked D, which, by means of forcetransmitting pitmanmarked F, is also connected with momentum-wheels below marked G,attached to crank-shaft marked 0. The letter O in Fig. 1 refers to 'asteady-rod connecting and bracing the upright frames.

Fig.2 is a sectional side elevation, showing cylinder, also showing theforce-transmitting pitmen marked I and F, with their centers at rightangles with each other, thus illustrating how the pitmen marked I and Falternately maintain the full power of the engine by pulling at rightangles with the fulcrums of the crank and driving shaft along theiradjoining or alternate quadrants of the circuit of their motion.

Fig. 3 is an elevation of detached crankwheels, referred to by theletters J. Fig. 4 is an elevation of thesame, showingpitnian-wristmarked in its relative position with the pitman with which it isconnected.

The crank-wheels marked J and the flywheel marked H should be madesufficien tly weighty to balance the pair of momentum-wheels oppositethem in position.

For stationary-engine purposes, either the crank-wheels marked J or thefly-whcel marked H may be used as driving-pulleys.

Having thus described and explained the construction and operation ofmyimprovement, What I claim as new, and desire to secure by LettersPatent, is

1. The independentpitmcn and drivingshaft, separate from the shaftsconnecting with the piston-rod, the said pitmen being arranged tooperate the independent driving shafts through alternate and oppositequadrants of the circuit of its motion, whereby a uniform powerthroughout the revolution of the engine is obtained, substantially asspecified.

2. The combination of the oscillating cylinder A, mounted in the frame Land provided with suitable induction and eduction ports and valves forcontrolling the admission and escape of steam, the piston provided withpiston-rod E, the crank-shafts carrying fly-wheels G, the connectingrodsI, and the crank-wheels J, mounted on a shaft carrying the driving-wheelH, and the pitman F, connecting the cranks O and D, the wholeconstructed and arranged to operate substantially as specified.

In testimony that I claim the foregoing I have hereunto affixed my handthis the 23d day of August, 1880.

JOHN CURRY MILLER. Witnesses:

FRANK PARDoN, ED. MEYLEMY.

